ChemicalBook > CAS DataBase List > Trimethylolpropane

Trimethylolpropane

Product Name
Trimethylolpropane
CAS No.
77-99-6
Chemical Name
Trimethylolpropane
Synonyms
1,1,1-TRIS(HYDROXYMETHYL)PROPANE;Trimethylol propane;propylidynetrimethanol;HEXAGLYCEROL;Trimethylopropane;1,1,1-TRIMETHYLOLPROPANE;Trimethylol;Abbreviation;Trimethylolpropan;TrimethanolPropane
CBNumber
CB3725999
Molecular Formula
C6H14O3
Formula Weight
134.17
MOL File
77-99-6.mol
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Trimethylolpropane Property

Melting point:
56-58 °C(lit.)
Boiling point:
159-161 °C2 mm Hg(lit.)
Density 
1.176
vapor density 
4.8 (vs air)
vapor pressure 
<1 mm Hg ( 20 °C)
refractive index 
1.4850 (estimate)
Flash point:
172 °C
storage temp. 
Store below +30°C.
solubility 
H2O: 0.1 g/mL, clear
pka
14.01±0.10(Predicted)
form 
Flakes
color 
White
PH
6.5 (100g/l, H2O, 20℃)(External MSDS)
explosive limit
2-11.8%(V)
Water Solubility 
soluble
BRN 
1698309
InChIKey
ZJCCRDAZUWHFQH-UHFFFAOYSA-N
LogP
-0.975 (est)
CAS DataBase Reference
77-99-6(CAS DataBase Reference)
NIST Chemistry Reference
1,3-Propanediol, 2-ethyl-2-(hydroxymethyl)-(77-99-6)
EPA Substance Registry System
Trimethylolpropane (77-99-6)
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Safety

Safety Statements 
22-24/25
WGK Germany 
1
RTECS 
TY6470000
Autoignition Temperature
375 °C DIN 51794
TSCA 
Yes
HS Code 
29054100
Hazardous Substances Data
77-99-6(Hazardous Substances Data)
Toxicity
LD50 orally in Rabbit: > 2500 mg/kg
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Hazard and Precautionary Statements (GHS)

Symbol(GHS)
Signal word
Warning
Precautionary statements

P201Obtain special instructions before use.

P202Do not handle until all safety precautions have been read and understood.

P280Wear protective gloves/protective clothing/eye protection/face protection.

P308+P313IF exposed or concerned: Get medical advice/attention.

P405Store locked up.

P501Dispose of contents/container to..…

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N-Bromosuccinimide Price

Sigma-Aldrich
Product number
8.08394
Product name
2-Ethyl-2-(hydroxymethyl)-1,3-propanediol
Purity
for synthesis
Packaging
100g
Price
$64.8
Updated
2024/03/01
Sigma-Aldrich
Product number
8.08394
Product name
2-Ethyl-2-(hydroxymethyl)-1,3-propanediol
Purity
for synthesis
Packaging
1kg
Price
$111
Updated
2024/03/01
Sigma-Aldrich
Product number
8.08394
Product name
2-Ethyl-2-(hydroxymethyl)-1,3-propanediol
Purity
for synthesis
Packaging
2.5kg
Price
$235
Updated
2024/03/01
Sigma-Aldrich
Product number
148083
Product name
1,1,1-Tris(hydroxymethyl)propane
Purity
97%
Packaging
500g
Price
$29.7
Updated
2024/03/01
Sigma-Aldrich
Product number
148083
Product name
1,1,1-Tris(hydroxymethyl)propane
Purity
97%
Packaging
3kg
Price
$131
Updated
2024/03/01
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Trimethylolpropane Chemical Properties,Usage,Production

Chemical Properties

Trimethylolpropane is a Colorless, hygroscopic crystals. Soluble in water and alcohol. Combustible.The three primary hydroxyl groups undergo the normal OH group reactions.

Uses

Trimethylolpropane acts as a precursor to alkyd resins, high-gloss coatings and ion exchange resins. It is also employed as a multifunctional monomer utilized for the production of coatings, ethoxylated and propoxylated trimethylolpropane derivatives. Further, it serves as a building block in the polymer industry.

Application

Trimethylolpropane is used in saturated polyesters for coil coatings, alkyds for paints, polyurethanes for coatings and elastomers, acrylic acid esters for radiation curing, esters for synthetic lubricants, rosin esters and for surface treatment of pigments.
Large quantities of trimethylolpropane and its ethoxylated derivatives are used as precursors for urethanes and polyester resins. Another important field of application is in medium-oil and short-oil alkyd resins (→ Alkyd Resins). The resulting lacquers are characterized by excellent resistance to alkali, detergents, and water, combined with outstanding impact resistance and flexibility, as well as excellent clearness and clearness retention.

Definition

ChEBI: Trimethylolpropane is a primary alcohol. It is used as a precursor for the manufacture of resins including alkyds, saturated polyesters and polyurethanes (polyester polyol and polycarbonate diol).

Synthesis

Trimethylolpropane is made by the base-catalyzed aldol addition of butyraldehyde with formaldehyde followed by Cannizzaro reaction of the intermediate 2,2-bis(hydroxymethyl) butanal with additional formaldehyde and at least a stoichiometric quantity of base.

Purification Methods

Various procedures have been suggested for separating the trimethylolpropane from the formate. For instance, the concentrated reaction solution can be extracted with an organic solvent, which is then evaporated and the crude trimethylolpropane is purifified by vacuum distillation. In another variant, the aqueous reaction solution is evaporated until most of the sodium formate crystallizes and is removed by hot fifiltration. The application of electrodialysis has also been suggested. The liquid trimethylolpropane which remains is liberated of residual salts with an ion exchanger and then distilled. The removal of discoloring impurities is described in. Cyclic diethers of the acetal type (1,3-dioxanes, formals) can be converted into TMP and methanol by metal-catalyzed hydrogenation. Removal of high boiling acetals by acid treatment has been described.

Purification Methods

Crystallise it from acetone and ether and it distils at high vacuum. [Beilstein 1 III 2349.]

Trimethylolpropane Preparation Products And Raw materials

Raw materials

Film evaporator Formaldehyde Butyraldehyde

Preparation Products

synthetic fiber oil QDH-101 Polyurethane Flame retardant for pure-dacron Toluene diisocyanate
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View Lastest Price from Trimethylolpropane manufacturers

Hebei Dangtong Import and export Co LTD
Product
Trimethylolpropane 77-99-6
Price
US $910.00-900.00/metric tonnes
Min. Order
1metric tonnes
Purity
99%
Supply Ability
1000tons
Release date
2023-02-17
hebei hongtan Biotechnology Co., Ltd
Product
Trimethylolpropane 77-99-6
Price
US $30.00/kg
Min. Order
1kg
Purity
98%
Supply Ability
2000kg
Release date
2024-03-27
Henan Fengda Chemical Co., Ltd
Product
Trimethylolpropane 77-99-6
Price
US $50.00-1.00/KG
Min. Order
1KG
Purity
99%
Supply Ability
g-kg-tons, free sample is available
Release date
2023-12-23

77-99-6, TrimethylolpropaneRelated Search:

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  • 1,1,1-TRIS(HYDROXYMETHYL)PROPANE, DIST.
  • TrimethanolPropane
  • 1,3-Propanediol, 2-ethyl-2-(hydroxymethyl)-
  • Trimethylol
  • Abbreviation
  • propylidynetrimethanol
  • Trimethylolpropane, carbamate with tolylene diisocyanate solution
  • Trimethyloy propane
  • TRIMETHYLOLPROPANE(TMP)
  • 1,1,1-Tris(hydroxymethy1)propane
  • TRIMETHYLOLPROPANE (2-ETHYL-2-HYDROXYMETHYLPROPANE) TMP
  • 2-ETHYL-2-HYDROXYMETHYLPROPANE-1,3-DIOL
  • Trimethylolpropan
  • Perstorp Trimethylolpropane (TMP)
  • 2-Ethyl-2-hydroxymethyl-1,3-propanediol, Trimethylolpropane
  • 2-Ethyl-2-(hydroxymethyl)-1,3-propanediol,98%
  • 1,1,1-Propanetriyltrismethanol
  • 1,1',1''-Propylidynetrimethanol
  • 2-(Hydroxymethyl)-2-ethyl-1,3-propanediol
  • 1,1,1-tris(hydroxymethyl)propane　／Hexaglycerine
  • TRIS(HYDROXYMETHYL)PROPANE
  • (propanetriyl)tris-methano
  • 1,1,1-Tris(hydroxy)propane
  • 1,1,1-tris(hydroxymethyl)-propan
  • 2,2-bis(hydroxymethyl)-1-butanol[qr]
  • 2,2-Dihydroxymethylbutanol
  • 2-ethyl-2-(hydroxymethyl)-3-propanediol
  • 2-Ethyl-2-(hydroxymethyl)propanediol
  • 1,1,1-tris(
  • 2-ethyl-2-hydroxymethyl-3-propanediol
  • 1,1,1-N-Tris(hydoxymethyl)propane
  • Trimethylol propane
  • 3-Propanediol,2-ethyl-2-(hydroxymethyl)-1
  • Butanol, 2,2-bis(hydroxymethyl)-
  • Ethriol
  • Ethyltrimethylolmethane
  • Etriol
  • Ettriol
  • Hexaglycerine
  • Methanol, (propanetriyl)tris-
  • Propane, 1,1,1-tris(hydroxymethyl)-
  • TMP (Alcohol)
  • tmp(alcohol)
  • tmp[alcohol]
  • Tri(hydroxymethyl)propane
  • 2,2-Bis(hydroxymethyl)-1-butanol 2-Ethyl-2-hydroxymethyl-1,3-propanediol Hexaglycerol 1,1,1-Tris(hydroxymethyl)propane
  • 2-ETHYL-2-(HYDROXYMETHYL)-1,3-PROPANEDIO
  • TMP, TriMethylol propane
  • 1,1,1-Tris(hydroxyMethyl)propane (TMP)
  • 2-Ethyl-2-(hydroxyMethyl)-1,3-propanediol, 98% 1KG
  • 2-Ethyl-2-(hydroxyMethyl)-1,3-propanediol, 98% 500GR
  • 1,1,1-Tris(hydroxymethyl)propane dist., >=98.0% (GC)
  • 2-Ethyl-2-(hydroxymethyl)-1,3-propanediol for synthesis
  • HEXAGLYCEROL
  • 2,2'-DIHYDROXYMETHYL-1-BUTANOL
  • 2,2-BIS(HYDROXYMETHYL)-1-BUTANOL
  • 2-ETHYL-2-(HYDROXYMETHYL)-1,3-PROPANEDIOL
  • 1,1,1-TRIS(HYDROXYMETHYL)PROPANE